The binding sites of Potassium atom in the structure of Avian Respiratory Complex II With Malonate Bound (pdb code 2h89). This binding sites where shown with 5.0 Angstroms radius around Potassium atom. The 2h89 structure was solved by L.S.HUANG, J.T.SHEN, A.C.WANG, E.A.BERRY, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: